Ever noticed most identity politics crusaders tend to be Gen Xers?

[Sumner 1868]

It's kind of funny, given how the media constantly blame it as a youth trend. Yet if you look up the ages of these people, most of them (on both sides) were born in the 1970s. Why? An echo effect from the 1990s culture wars?

[dead0man]

evidence of claim?

[Del Tachi]

Social-ideological movements in the contemporary era (i.e., second-wave feminism, environmentalism, neo-conservatism) almost always originate from an academic nucleus. 

"SJW-ism" isn't a grassroots youth movement.  Intersectionality has been baking in the oven of university gender departments since the 1990s, and as the academics who developed these theories have come into credible positions of authority we begin analyzing current events through them.